B)补全对话 (10分) A:David,did you say you would have a party last Saturday? B; Yes,it was my birthday. (6) But I invited you.l sent an e-mail to you last Monday. ' A:I didn't get it. (7) I’m sorry about it. B:That's OK. But I was kind of upset that you weren’t there. A:Really? I was upset,too. You know,we took a bike trip last weekend.(8) We got lost for four hours. B:Oh,that's terrible. A:Listen. Let-s go out for lunch today.(9) B:You don-t have to. A:I know. But I really want to, B:OK. That's very nice of you. (10) A:See you later and happy birthday. 6._______